The countdown clock for NASA's Artemis I mission is on hold at T-minus 40 minutes due two several issues that threaten the launch of the world's most powerful space rocket to the moon. One of the Space Launch System's (SLS) engines is struggling to get to the proper temperature, while engineers are assessing what appears to be a crack on the core stage of the $22 billion rocket.Derrol Nail, the NASA launch commentator, said that the line of frost on the outside of the core stage appeared to be the result of a crack in the insulating foam, not the underlying 'intertank flange.'
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